Lithiation of diethyl trichloromethylphosphonate and the transformations of the α-lithiated derivative
Abstract
The lithiation of diethyl trichloromethylphosphonate below –100 °C leads to a stable α-lithiated derivative, but at temperatures of about –80 °C the lithiation is accompanied by spontaneous reactions leading to tetraethyl (chloromethylene)bisphosphonate as the exclusive product. Possible mechanisms of the reaction are discussed.